摘要： 提出了在VoD系统中减少综合性资源开销的一种灵活的分布式层次化影片缓存（Cache）配置策略。在采用单播传输情况下分析了标志着系统集成、服务器的流支持、存储及网络连接等的综合性资源开销。性能分析结果表明：用该策略构成的系统比传统的方案具有更小的开销，并且可以用较低的代价获得更多影片的服务。

关键词: 缓存, 可扩展性, 分布, 系统开销

Abstract: A flexible distributed cache configuration strategy is presented on VoD for saving resources. System cost with respects to system integration, servers supporting streams, storages and network linking is analyzed using unicast transmission. The system using these strategies utilizes less cost and can get more video services with less costs compared with traditional scheme.

中图分类号: 

• TN948.64